This publication contains the papers presented at the Sixth AFCRL Scientific Balloon Symposium held in June, 1970 to promote the exchange of current information among balloon designers, developers, and flight managers and researchers engaged in scientific balloon programs. Subjects include: balloon-borne experiments in high-energy astrophysics, detection of atmospheric tides near 48 km, sun-oriented atmospheric optics, a proposed balloon mission in the Venus atmosphere, a panel on balloon materials and testing, telemetry and balloon-control instrumentation, advanced balloon technology, high altitude station-keeping balloons, the AFCRL tethered-balloon facility, advances in meteorological balloons, and superpressure balloons in the tropical stratosphere.

Includes entries for maps and atlases.

Fluids -- Heat transfer -- Thermodynamics -- Mechanical seals -- Pumps and compressors -- Drivers -- Gears -- Bearings -- Piping and pressure vessels -- Tribology -- Vibration -- Materials -- Stress and strain -- Fatigue -- Instrumentation -- Engineering economics.

This book is concerned with the steady state hydraulics of natural gas and other compressible fluids being transported through pipelines. Our main approach is to determine the flow rate possible and compressor station horsepower required within the limitations of pipe strength, based on the pipe materials and grade. It addresses the scenarios where one or more compressors may be required depending on the gas flow rate and if discharge cooling is needed to limit the gas temperatures. The book is the result of over 38 years of the authors' experience on pipelines in North and South America while working for major energy companies such as ARCO, El Paso Energy, etc.